I was thinking of using one HT6 to power the interiors and one HT6 (bridged) to power the four Rev 8's..... this way I can use the head units fade control to control the volume in the cabin vs the tower.

Should I be doing something different? Previously mentioned to me was to run a pair of Revs off of each Amp and some of the cabin speakers. In doing this I will loose the ability to control the volume level control so I will probably need to add a 420 eq.

You will want to bridge one HT-6 into 3 ch mode for 300x3. To 3 of the REV8. Then the other HT-6 will get two of the channels 5/6 bridged for the last rev 8 for 300x1. And then the remaining 4 chs will run the XS-650. Bow off chs 1-2 and the last two pairs in parallel off chs 3-4.

This will give you great power across the board. You just want to make sure you have the RCA correct when running the amps. The one in 3 ch mode would have one RCA into it with the button pressed for 2 ch input and ch 5/6 input off. The other would have 2 ch input pressed in and ch 5-6 input ON. You would use a Y adapter at the amps to put the tower RCA into the 1-2 input on the tower amp and the other rca into the ch 5-6 input on the other amp. Then the boat RCA would go into ch 1-2. This way you only need 3 RCA to the amps. Tower, boat and sub. You will still be able to use fade as well and easy upgrade to a 420 later.

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